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通过对吉比特无源光网络(GPON)预测带宽分配机制分析和建模,提出了一种新型的“多服务台,多休假,限定门限的先入先服务(S/G/m/FCFS)排队模型.”在排队模型基础上进一步研究GPON系统的动态带宽预测算法(DEBA)和静态带宽预测算法(SEBA).DEBA随业务负载的变化动态调整带宽预测因子,可节省带宽资源,改善网络性能.仿真结果表明,DEBA比SEBA更能降低业务接入时延,并有效避免拥塞.
By analyzing and modeling GPON prediction bandwidth allocation mechanism, a new type of multi-service station, multi-leave, threshold-first preemptive service (S / G / m / FCFS) Queuing Model. "Based on the queuing model, the dynamic bandwidth prediction algorithm (DEBA) and the static bandwidth prediction algorithm (SEBA) of the GPON system are further researched. The DEBA dynamically adjusts the bandwidth prediction factor according to the change of the service load to save bandwidth resources and improve the network Performance Simulation results show that DEBA can reduce service access delay more effectively than SEBA and avoid congestion effectively.